<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>
    
</body>
<script>
    let c=0,a=1,b=1;
    for(let i=0;i<10;i++)
    {
         c=a+b;
         a=b;
         b=c;
    }
    console.log(c)

</script>
</html>